Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc7e71824d30ba9…

MALICIOUS

PDF

59.2 KB Created: 2020-10-16 08:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 966ab2302796d2a3083e8bc2c5b8900a SHA-1: 340682e6bbef91d103e75b981858ae0df4b4b829 SHA-256: 2fc7e71824d30ba98832e0c0f2bcad269f066c8c64b702f76c63dc605f0eb889
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high number of embedded links, many of which point to external resources, indicating a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive traffic to potentially malicious sites, possibly as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/123?keyword=sbs+tv+guide+fifa+world+cup+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368486/normal_5f878d0e88da5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f87551eb3567.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f881d9f1d952.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368971/normal_5f88d837c3fa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f88dc523e16b.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3079835.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/roriturosiw.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/5620724.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f88cf8848b3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367919/normal_5f87e464b12a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f880011bc154.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/60563a3d-cc3c-48fb-b5b1-defb09614c83/xozasizisebojejeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9735/0554/files/la_lupita_lenoir_city.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8484/9045/files/natigiremig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6088/6694/files/28047217896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2309/7766/files/90395191681.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8B 5992 bytes
SHA-256: b6e553e8795ede374d165d2e52f3f670e08e205105626be4bd7c4c155358881e
font_01_sfnt_off0000af09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF09 15780 bytes
SHA-256: a54c543755bc2c0f6f1bc418851a5750c3111dc991fa4fb2a786ea0a2059cc3b

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